Some USB Bluetooth adaptors may not allow wireless keyboard or mouse to wake some Macs from sleep

Issue or symptom

Some third-party USB Bluetooth adaptors, such as the D-Link DBT-120 (C1 rev or later) may not allow wireless keyboards or mice to wake some Macs from sleep.

Solution

Note: Your Mac may have Bluetooth built-in, making the use of a USB adaptor unnecessary.

To wake the computer

To wake the computer, press the computer's power button once. This will wake the computer from sleep. If you see an alert asking if you'd like to Restart, Sleep, Shutdown or Cancel. click Cancel.

Workaround for the issue

1. From the Apple menu, choose System Preferences.
2. From the View menu, choose Bluetooth.
3. Make sure Allow Bluetooth devices to wake this computer is selected (checked).

If this setting is dimmed ("grayed out") and you have a D-Link DBT-120 adaptor, follow these steps:

1. Disconnect the USB Bluetooth adaptor.
2. See if the adaptor's "HW" version is C1 or later.
   
   
   

Apple has identified issues waking from sleep with certain models of the D-Link DBT-120 adaptor with hardware versions of C1 or later. Models with versions of B2 through B4 are not affected by this issue.

Important: Information about products not manufactured by Apple is provided for information purposes only and does not constitute Apple's recommendation or endorsement. Please contact the vendor for additional information.